Answer:
3.5
Step-by-step explanation:
Given: A data set as 4 , 7, 7, 3, 5, 2, 6, 7, 9
To find: The interquartile range for the data set
Solution: The interquartile range for the data set is the difference of the middle of the first half and the middle of the second half.
So, to find we first need to find the median.
The numbers can be arranged in ascending order as:
2, 3, 4, 5, 6, 7, 7, 7, 9
As, the number of terms is 9, which is odd. So, the median is term. So, the median is 6.
So, we have the first half as 2, 3, 4, 5 and the second half as 7, 7,. 7, 9.
Now, the middle of first half is
middle of second half is
Now, interquartile range
Hence, interquartile range is 3.5.
The observatory telescope has 22 times the magnifying power compared to the small telescope.
Data;
To solve this question, we have to divide the large telescope by the small telescope to calculate it's magnifying power.
The magnification of the observatory telescope is 22 times greater or larger than the small telescope.
Learn more on division of numbers here;